exam Maths Puzzle Numerical Ability

A fathers age is 13 times that of his son. In ten years the sons age will be 1/3of his fathers. What is the fathers age? What is the sons age?

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exam Other Question

Find the sum or difference.

16. -10 7/16 - 2 3/16

Any help with this equation would be GREATLY</b> appreciated.
(sqrt 6+ 2)^2
i got--- 14 sqrt6 is this right?